Duet 2 Wifi Fans setup
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So I am trying to use a 3-pin 5V fan for the hotend, 2x 2-pin 24V fans for layer cooling, and 4x 2-pin 12V fans for cooling electronics.
I have jumpered the VIN and V_FAN pins in the V FAN JUMPER SELECT.
I have a 24V power supply and a LM2596 regulator providing 12V to a fan splitter where I attached the 12V fans, the splitter GND goes to an Always On Fan GND pin.
The 2x 2-pin 24V layer fans are attached directly to the FAN0 and FAN2 board connectors.
My doubt is how should I connect the 3-pin 5V hotend fan? Can I connect the positive to the 5V pin of the Jumper Select and negative to the GND pin of the FAN1 connector? If so, will this allow to use thermostatic control, so that this 5V fan start running at 45ºC?
Thank you in advance.
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@jbjbjb82 said in Duet 2 Wifi Fans setup:
Can I connect the positive to the 5V pin of the Jumper Select and negative to the GND pin of the FAN1 connector? If so, will this allow to use thermostatic control, so that this 5V fan start running at 45ºC?
Yes. The Duet switches PWM on the negative side, so as long as the negative wire of the fan is connected to Fan1 you will be able to control it regardless of where it gets it's voltage source from.
When using multiple fan voltages in the same system be very careful not to short out a higher voltage into the 5v side.
